EP0185598B1 - Anode tournante pour tube à rayons X - Google Patents

Anode tournante pour tube à rayons X Download PDF

Info

Publication number
EP0185598B1
EP0185598B1 EP85420225A EP85420225A EP0185598B1 EP 0185598 B1 EP0185598 B1 EP 0185598B1 EP 85420225 A EP85420225 A EP 85420225A EP 85420225 A EP85420225 A EP 85420225A EP 0185598 B1 EP0185598 B1 EP 0185598B1
Authority
EP
European Patent Office
Prior art keywords
emissive material
base body
anode according
anode
ray tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85420225A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0185598A1 (fr
Inventor
Michel Bargues
René Romano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA
Original Assignee
Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA filed Critical Comurhex pour La Conversion de lUranium en Metal et Hexafluorure SA
Priority to AT85420225T priority Critical patent/ATE39784T1/de
Publication of EP0185598A1 publication Critical patent/EP0185598A1/fr
Application granted granted Critical
Publication of EP0185598B1 publication Critical patent/EP0185598B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08—Anodes; Anti cathodes
    • H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
    • H01J35/108—Substrates for and bonding of emissive target, e.g. composite structures

Definitions

  • the present invention relates to an anode, in particular a rotating anode intended to equip an X-ray tube.
  • X-ray tubes used mainly in radiology are equipped with disc-shaped amodes or anticathodes whose function is to emit X-radiation from the parts of their surface which are subjected to the action of a flow of electrons coming from a cathode with a sufficiently high kinetic energy.
  • this basic body had to have, at the same time, a high melting temperature, a high specific heat and a good coefficient of thermal conductivity.
  • molybdenum we turned to graphite because it had a much higher specific heat and also because it was lighter, which simplified its rotation in the case of anodes rotating.
  • problems with cracking of the active zone due, both to reactions which occur between the tungsten layer and the graphite and which lead to fragile intermediate layers and to differences in expansion between the materials present.
  • it has been recommended to deposit a barrier layer between graphite and tungsten which can be, for example, pure rhenium as taught in French patent 1,575,117.
  • This product is a nitrogenous aluminum compound, with the chemical formula AIN which can be obtained in powder form and whose thermal and mechanical properties allow it to be shaped by conventional sintering techniques to give a solid of density 3 , 26 approximately, that is to say a little larger than graphite but, clearly smaller than that of molybdenum.
  • This product also has a relatively high melting temperature and in particular a good coefficient of thermal conductivity which makes it possible to channel and evacuate throughout the anode the significant thermal flux created in the active area.
  • the Applicant has found perfect adhesion between the elements of the composite thus formed, a quality which is maintained over time. under the action of electron fluxes of very high kinetic energy.
  • the anode according to the invention finds its application in all X-ray tubes including the most recent models implementing high powers and rotational speeds which can be greater than 10,000 revolutions / minute.

Landscapes

  • X-Ray Techniques (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Ceramic Products (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
EP85420225A 1984-12-13 1985-12-10 Anode tournante pour tube à rayons X Expired EP0185598B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85420225T ATE39784T1 (de) 1984-12-13 1985-12-10 Drehanode fuer roentgenroehre.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8419398 1984-12-13
FR8419398A FR2574988B1 (fr) 1984-12-13 1984-12-13 Anode tournante pour tube a rayons x

Publications (2)

Publication Number Publication Date
EP0185598A1 EP0185598A1 (fr) 1986-06-25
EP0185598B1 true EP0185598B1 (fr) 1989-01-04

Family

ID=9310746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85420225A Expired EP0185598B1 (fr) 1984-12-13 1985-12-10 Anode tournante pour tube à rayons X

Country Status (6)

Country Link
EP (1) EP0185598B1 (cg-RX-API-DMAC7.html)
JP (1) JPS61143929A (cg-RX-API-DMAC7.html)
AT (1) ATE39784T1 (cg-RX-API-DMAC7.html)
DE (1) DE3567318D1 (cg-RX-API-DMAC7.html)
FR (1) FR2574988B1 (cg-RX-API-DMAC7.html)
SU (1) SU1479013A3 (cg-RX-API-DMAC7.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4975621A (en) * 1989-06-26 1990-12-04 Union Carbide Corporation Coated article with improved thermal emissivity
JPH0793099B2 (ja) * 1990-07-27 1995-10-09 信淳 渡辺 回転陽極ｘ線管ターゲットの製造方法
RU2307422C1 (ru) * 2005-12-26 2007-09-27 Институт структурной макрокинетики и проблем материаловедения Российской Академии наук Комбинированный вращающийся анод рентгеновской трубки и способ его получения

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178523B (de) * 1962-07-04 1964-09-24 Patra Patent Treuhand Roentgenroehren-Drehanode, insbesondere tellerfoermige Drehanode
US3459678A (en) * 1966-01-03 1969-08-05 Eastman Kodak Co Olefin hydration catalyst
DE2201979C3 (de) * 1972-01-17 1979-05-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur Herstellung einer geschwärzten Schicht auf Drehanoden von Röntgenröhren
US3819971A (en) * 1972-03-22 1974-06-25 Ultramet Improved composite anode for rotating-anode x-ray tubes thereof
AT336143B (de) * 1975-03-19 1977-04-25 Plansee Metallwerk Rontgenanode
CA1142211A (en) * 1978-11-20 1983-03-01 Richard G. Weber Rotatable x-ray target having off-focal track coating
JPS56141153A (en) * 1980-04-03 1981-11-04 Toshiba Corp Target for x-ray tube

Also Published As

Publication number Publication date
FR2574988A1 (fr) 1986-06-20
JPS61143929A (ja) 1986-07-01
ATE39784T1 (de) 1989-01-15
DE3567318D1 (en) 1989-02-09
SU1479013A3 (ru) 1989-05-07
EP0185598A1 (fr) 1986-06-25
FR2574988B1 (fr) 1988-04-29
JPH023263B2 (cg-RX-API-DMAC7.html) 1990-01-23

Similar Documents

Publication Publication Date Title
US4090103A (en) X-ray target
US5008918A (en) Bonding materials and process for anode target in an x-ray tube
CA2196589C (fr) Nitrure de titane dope par du bore, revetement de substrat a base de ce nouveau compose, possedant une durete elevee et permettant une tres bonne resistance a l'usure, et pieces comportant un tel revetement
JPH04223032A (ja) Ｘ線管ターゲット
FR2521776A1 (fr) Anode tournante pour tube a rayon x
US5148463A (en) Adherent focal track structures for X-ray target anodes having diffusion barrier film therein and method of preparation thereof
US5943389A (en) X-ray tube rotating anode
US5204891A (en) Focal track structures for X-ray anodes and method of preparation thereof
EP0273161B1 (en) X-ray tube target
US4978051A (en) X-ray tube target
EP0185598B1 (fr) Anode tournante pour tube à rayons X
NL8104258A (nl) Verbeterde trefplaat voor roentgenbuizen.
US5352489A (en) Method for manufacturing a rotary anode for X-ray tube
FR2655191A1 (fr) Anode pour tube a rayons x.
US20120057681A1 (en) X-ray target manufactured using electroforming process
US5099506A (en) X-ray rotary anode
JPH0598423A (ja) チタンの酸化防止用のクロム被膜
EP0415847B1 (fr) Anticathode tournante de tube à rayons X
JPS598252A (ja) Ｘ線管用回転ターゲットの製造法
EP0112206B1 (fr) Procédé de revêtement en carbures de surfaces métalliques
JPH0719533B2 (ja) Ｘ線管用回転ターゲットの製造方法
FR2593325A1 (fr) Anode tournante a graphite pour tube radiogene
JP2004197116A (ja) 電子ビーム蒸着用ハースライナー
JPH0480493B2 (cg-RX-API-DMAC7.html)
SU1156529A1 (ru) Вращающийся анод рентгеновской трубки и способ его изготовления

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE GB IT

17P Request for examination filed

Effective date: 19860730

17Q First examination report despatched

Effective date: 19880330

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE GB IT

REF Corresponds to:

Ref document number: 39784

Country of ref document: AT

Date of ref document: 19890115

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3567318

Country of ref document: DE

Date of ref document: 19890209

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19931115

Year of fee payment: 9

Ref country code: DE

Payment date: 19931115

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19931117

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19931206

Year of fee payment: 9

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19941210

Ref country code: AT

Effective date: 19941210

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19941231

BERE Be: lapsed

Owner name: COMURHEX SOC. POUR LA CONVERSION DE L'URANIUM EN

Effective date: 19941231

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941210

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950901